5th Grade math
posted by Sky
To: bobpursley  how do you teach a 5th grader how to figure out the answer?

Steve
I'm not Bob, and he may have further input, but it seems to me you just take what information they give you, and step by step apply it.
They said:
You can only use the digits 09. I need an odd number that is a multiple of five with no repeated digits. Half the digits are odd and the other half is even. The largest digit in the number is in the tens place (but it is not the largest digit). The digit in the hundreds place is half the digit in the tens place. The sum of the digits is greater than 20.
you know the number is odd, and a multiple of five, so it must end in 5. Explain how you know this.
The largest digit is 9, but the number in the 10s place is not 9, so it must be 8 or less.
Since the digit in the hundreds place is half the tens' place, the tens digit must be even, so it's 0,2,4,6,8. But, it can't be 0,2,or 4, so it must be 6 or 8.
Why, because the sum of the digits is 20, and if the largest digit is 6, then adding 06 gives 21.
Now, we don't know how many digits there are in the number, but there must be at least 6, if the largest is 6. That would give us the choices
xxx365 if there is no 0, or
xxxx365 if there is a 0 in the mix
Since half the digits are odd, there must be an even number of digits. so there is no 0.
xxx365 is the only pattern. Using that, we can have only one more odd digit, so fill in the rest as you will, using 1,2,4 anywhere you like.
Now, if the 10's digit is 8, then we could have
xxx485 or xxxxx485
The sum must be greater than 20, but any of the remaining digits will work.
So, using 0,1,2,3,6,7 fill in the other digits, making sure that 0 is not the first digit, there are the same number of evens and odds, and there are no repeats.
Bob's 123485 is just one possible solution. If they wanted the smallest possible number, then I'd have said 103485. The largest would be 76321485. 
jessica
how do you subtract 9 and 1 half minus 3

heaven
567

rashad geese
Find the following landmarks for the set of numbers 28,17,45,32,29,14,27.
Respond to this Question
Similar Questions

Math
Can you help me with my son's homework question: Maria earned $110, which is $86 more than twice the amount Joan earned. How much did Joan earn? 
5th grade science
sciencewell im learning about the diffence between a vascular and nonvascular plant and i don't get it so if you can help.thanks 5th grader 
5th Grade student teacher: Needs ur help....
What fun activity could I use to to teach 5th grade students about the Constitution? 
5th grade
Will someone tell me a webpage my daughter can get help on solving equations, word problems w/ algebraic chains...or for 5th grade math. Thank you 
5th Grade fractions
Walt has a piece of rope which is 10 1/3 feet long. He has to cut it into 4 equal pieces. How long will each piece be? 
5th grade math
I am desperately trying to help my 5th grader figure out how many ways can we make this equation true 24 x 18 = 432 x 
math
Make a model of a rectangular prism that is not a cube and has a surface area of 62 cm squared. What are the measurements of this rectangular prism? 
5th Grade Math
Not only need answer but need to know how you teach a 5th grader how to solve this problem. You can only use the digits 09. I need an odd number that is a multiple of five with no repeated digits. Half the digits are odd and the other … 
5th Grade Math
Not only need answer but need to know how you teach a 5th grader how to solve this problem. You can only use the digits 09. I need an odd number that is a multiple of five with no repeated digits. Half the digits are odd and the other … 
Math for 5th graders
Hi I am a fifth grader I need to learn how ferries wheel in 5th grade math